Electric battery.



V. HOLZAPFBL, JR.

ELECTRIC BATTERY.

APPLICATION IILBD JUNE 25,1912.

Patented Mar. 23, 1915.

UNITED STATES PATE ,FFICE. Y

VALENTINE HOLZAPFEL, JR., OF BAYONNE, QEVJ JERSEY.

ELECTRIC BATTERY.

T0 all whom it. may concern Be it known that I, VALENTINE Homar- FEL, J r., a citizen of the United States, and a resident of Bayonne, in the county of Hudson and State of New Jersey, lhave invented certain new and useful Improvements in Electric Batteries, of which the following is a specication.

My invention relates to improvements in electrical generators, more particularly those known as semi-dry cells. 'l

One of the objects of my invention is to provide a ll in which any of the parts can be replaced after becoming exhausted.

Another object is to provide a cell into which a liquid can be introduced when the charge therein becomes weak to again augment its capacity and prolong its period of action.

A further object is to provide a cell which is novel in construction and arrangement of parts.

I attain these objects as illustrated in the accompanying drawing in which- Figure 1 is a vertical central. sectional view of a cell exemplifying the invention, Fig. 2 is a View of the perforatedzinc or positive electrode of the cell, Fig.. 3 is a detail sectional view of a binding post, Fig. 4 is the cover of the cell, and Fig. 5 is a right hand view of Fig. 4.

The cell comprises a jar 1 preferably of glass, and a Zinc vor positive electrode 2 perforated as at 3 andY having secured in any convenient manner at its upper end a hollow post 4, which receives a screw or binding post 5. lVithin the positive electrode 2 is contained an absorbent lining 6, preferably of two layers of blotting paper with a layer 6a of paste between the accompanying faces. The blotting paper prevents short circuits between the zinc element and the (l L4olarizer. IVithin this lining is contained a depolarizer 7 which is composed of powdered carbon and manganese dioxid, tha't is mixed with sal-ammoniac dissolved in a solution of paste and water. rl`he mixture is molded to proper shape and dried, so that it can readily be intioduced or taken out of the cell and when necessary replaced by a new one.

The depolarizer 7 is formed with a cavity7 8 into which a carbon or negative electrode 9 is inserted. The carbon or negative electrode 9 is waxed or paraflined at its upper Specification of Letters Patent. paljgntgd Da 23, 1915.

Application filed .Tuneh25, 1912.

Serial No. 705,703

end, and is provided with a th* eaded metal ring l() which receives the body portion 11 of a cup-lille binding post having a shank 11?. A cover 12 of insulating material is held inplace by a second cover 13- on the jar 1. Screw threads 14 on the cover 13 en gage screw threads 15 at the upper end of the jar 1. A liquid 16, preferably of sal ammoniac and ehlorid of zinc 'dissolved in water, is introduced within the space 17 between the jar 1 and the positive electrode 2, thereby increasing the efficiency of the cell. To allow this liquid to have free access to the depolarizer, perforations 3 are formed in the zinc. Two layers of blotting paper 18 with a layer of paste 18a between them are located under the depolarizer and one layer 19 covers the same, to equally distribute the liquid over the depolarizer. l To preventI leakage of any kind from the cell I have provided washers Q0, '21 and 22. An elongated cavity Q8 with a hole at one end is formed in the cover 1:2 for the binding post 5. A right angled slot 23, 25 (see Fig. 5) is formed in the cover 12 and which locks with a supporting or locking pin 24 extending from the upper end of the positive electrode Z.-

To attach the cover 12 to the positive electrode 2, it is placed over the end of the latter` so that the portion 25 of the rightangled slot fits over the pin Q4, while the elongated cavity 28 is located over the hollow post- 4 of the positive electrode. The cover is then given a slight turn seating the pin 24 in the slot 23 and causing the hole 529 -to register with the hole in the post 4. The binding post 5 with the necessary binding nuts 26 and 27 is then passed through the hole 2.() in the cover, andthreaded into the hollow post 4f of the positive electrode. In order to obtain access to the interior of the cell it is only necessary to remove the cover 13 when all of the interior can be lifted out by raising the coverl 12, as the positive electrode 2 and carbon element are connected to said cover and the depolarizer snugly fits between the two. It will be observed that any part of the battery can be removed without disarranging any other part.

Having described mv invention what I desire to secure by Letters Patent and claim is:

l. In a cell for a battery the combination of a positive electrode, a binding post and u supporting'pin for said electrode, a cover having a hole for said binding post and a right angled slot in said cover to engage sald pin.

2. In an electric. battery of the character 'described the combination of a positive electrode and a negative electrode, a hollow post extending from'the positive electrode, a

l llocking pi'n extending from. the positive electrode, a cover of insulating material having an elongated cavity with a hole adjacent to .one end and having a right angled slot,.the hole registering with the hollow post and the right angled slot locking with the locking pin and a binding post extending through the hole of said cavity and enga ing said hollow post.

Signed at Bayonne in the county of Hudson and State of New Jersey this 15th day of June A. D. 1912.

' VALENTINE HOLZAPFEL, JR. Witnesses PERCIVAI. G. CRUDEN, ANNA SHARKEY. 

